25969636 has 24 divisors (see below), whose sum is σ = 56661696. Its totient is φ = 10117920.

The previous prime is 25969631. The next prime is 25969663. The reversal of 25969636 is 63696952.

It is not an unprimeable number, because it can be changed into a prime (25969631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41851 + ... + 42466.

It is an arithmetic number, because the mean of its divisors is an integer number (2360904).

Almost surely, 2^25969636 is an apocalyptic number.

It is an amenable number.

25969636 is an abundant number, since it is smaller than the sum of its proper divisors (30692060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25969636 is a wasteful number, since it uses less digits than its factorization.

25969636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84339 (or 84337 counting only the distinct ones).

The product of its digits is 524880, while the sum is 46.

The square root of 25969636 is about 5096.0412086246. The cubic root of 25969636 is about 296.1342372631.

The spelling of 25969636 in words is "twenty-five million, nine hundred sixty-nine thousand, six hundred thirty-six".